Pros
If you're enthusiastic about the collecting field in which you are employed/specializing, you can see and handle some amazing stuff. There is a fair amount of autonomy given for you to go and get business. You're encouraged to get out of the office and find property. There is a very collegial feel among colleagues -- people both in the department and in other departments get on well and enjoying hanging out both in and out of the office. You're always surrounded by fascinating people who deal with incredible things.
Cons
The upper management is barely aware of what goes on in the office. Employees are seen as replaceable cogs and represent more of a cost that a resource. There are so many layers of beaurocracy that getting some basic necessities like travel or accounting handled can be nightmarish. The management is also blissfully a aware of technological advancement and the company is trapped tied to an absolutely terrible IT partner because the founder is mates with the chairman. Recent management decisions have come without any explanation despite the gravity of the actions. There is seemingly no connection between the income you generate for the company and the monetary reward they pay back to their employees.